"At
the end of the afternoon, a large group of Celtic supporters attacked
police officers in plain clothes. Eight were injured and one left
unconscious."

Around 12,000 Celtic fans were expected in
Amsterdam, although the club warned supporters not to travel to the
stadium if they did not have a ticket.

The Scottish side also urged supporters to be “extra vigilant” after nine Ajax fans were arrested after attacking Celtic supporters on Tuesday evening.

A club statement said: “Celtic Football Club is urging all supporters in Amsterdam for tonight's Uefa Champions League tie with Ajax to be extra vigilant following an unprovoked attack on Celtic fans last night.

“The attack in the city centre by an element of the Ajax support resulted in a number of arrests.

“Celtic
are urging all supporters to be extra vigilant in the city centre and
at the Amsterdam ArenA, and to only stick to the advised areas for
safety reasons.” -------------- goal.com